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Q: Which of the following is the number of vibration made per unit time of a sound wave?
  • A. Time period
  • B. Amplitude
  • C. Wavelength
  • D. The frequency
Correct Answer: Option D - The number of oscillations made per unit time of a sound wave is called the frequency of the sound wave.
D. The number of oscillations made per unit time of a sound wave is called the frequency of the sound wave.

Explanations:

The number of oscillations made per unit time of a sound wave is called the frequency of the sound wave.